#FILTER ON VALUE TYPE ICLIPBOARD WINDOWS#
Windows Search runs IFilters in the Local System security context with restricted rights. Retrieves an interface representing the specified portion of object. Positions IFilter at the beginning of the first or next chunk and returns a descriptor. The IFilter interface has five methods, described in the following table. Gets a pointer to the IFilter that is most suitable for a specified class identifier (CLSID) retrieved from a stream variable. Gets a pointer to the IFilter that is most suitable for the content contained in an IStorage Interface object. Gets a pointer to the IFilter that is most suitable for the specified content type. These functions are especially useful when loading and binding to an embedded object's filter handler. Windows Search uses three functions, described in the following table, to access registered filter handlers (implementations of the IFilter interface).
#FILTER ON VALUE TYPE ICLIPBOARD CODE#
If available, the search engine uses the language code identifier (LCID) of a text chunk to perform language-specific word breaking and normalization. Windows Search breaks the results of the returned IFilter::GetText method into words, normalizes them, and saves them in an index. Full-text search engines like Windows Search call the IFilter methods to extract text and property information and add them to an index. The IFilter interface is designed to meet the specific needs of full-text search engines. You can extend Windows Search to index new or proprietary file types by writing filters to extract the content, and property handlers to extract the properties of files. Microsoft Windows Search uses filters to extract the content of items for inclusion in a full-text index. IFilter::GetChunk and Locale Code Identifiers.IFilter is the foundation for building higher-level applications such as document indexers and application-independent viewers. They also extract chunks of values, which are document properties. Filter handlers extract chunks of text from these items, filtering out embedded formatting and retaining information about the position of the text. Filter handlers, which are implementations of the IFilter interface, scan documents for text and properties.
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